Health chiefs have launched an urgent probe into the PCR testing network after a blunder at a Wolverhampton lab saw up to 45,000 Covid-infected Britons wrongly told they did not have the virus.
Dr Jenny Harries, the head of the UK Health Security Agency, said a ‘few thousand’ of the missed cases – mostly in the South West – were likely still infectious. People in the South East and Wales are also known to be affected.
She said a ‘serious